…a green book, which was called, Ionizing Radiation in the Treatment of Cancer, was really a book about the history of Nelson Mandela and the African National Congress, the ANC. And just seeing those three letters, ANC, made my stomach clench. That book was…

…clench. That book was banned, and the possession of it was punishable. Belonging to the ANC meant prison, like it did for Nelson Mandela. And in prison, some people were tortured and some were killed by the police. Another book on the shelf was called…